imports: import pytest
  import networkx
  from networkx.algorithms.assortativity.correlation import attribute_ac
  from .base_test import BaseTestAttributeMixing, BaseTestDegreeMixing
label_desc: Use image node_id 5 for calling the TestAttributeMixingCorrelation obj's underlying member method code with example usage: obj.test_attribute_assortativity_coefficient2() without return types